uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/modules/services/networking/tox-bootstrapd.nix

@@ -0,0 +1,74 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  WorkingDirectory = "/var/lib/tox-bootstrapd";
+  PIDFile = "${WorkingDirectory}/pid";
+
+  pkg = pkgs.libtoxcore;
+  cfg = config.services.toxBootstrapd;
+  cfgFile = builtins.toFile "tox-bootstrapd.conf"
+    ''
+      port = ${toString cfg.port}
+      keys_file_path = "${WorkingDirectory}/keys"
+      pid_file_path = "${PIDFile}"
+      ${cfg.extraConfig}
+    '';
+in
+{
+  options =
+    { services.toxBootstrapd =
+        { enable = mkOption {
+            type = types.bool;
+            default = false;
+            description =
+              ''
+                Whether to enable the Tox DHT bootstrap daemon.
+              '';
+          };
+
+          port = mkOption {
+            type = types.int;
+            default = 33445;
+            description = "Listening port (UDP).";
+          };
+
+          keysFile = mkOption {
+            type = types.str;
+            default = "${WorkingDirectory}/keys";
+            description = "Node key file.";
+          };
+
+          extraConfig = mkOption {
+            type = types.lines;
+            default = "";
+            description =
+              ''
+                Configuration for bootstrap daemon.
+                See <link xlink:href="https://github.com/irungentoo/toxcore/blob/master/other/bootstrap_daemon/tox-bootstrapd.conf"/>
+                and <link xlink:href="http://wiki.tox.im/Nodes"/>.
+             '';
+          };
+      };
+
+    };
+
+  config = mkIf config.services.toxBootstrapd.enable {
+
+    systemd.services.tox-bootstrapd = {
+      description = "Tox DHT bootstrap daemon";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig =
+        { ExecStart = "${pkg}/bin/tox-bootstrapd --config=${cfgFile}";
+          Type = "forking";
+          inherit PIDFile WorkingDirectory;
+          AmbientCapabilities = ["CAP_NET_BIND_SERVICE"];
+          DynamicUser = true;
+          StateDirectory = "tox-bootstrapd";
+        };
+    };
+
+  };
+}